<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <el-form ref="form" :model="formData" :rules="rules">
        <el-form-item
          label="账号"
          prop="username"
        >
          <el-input v-model="formData.username" />
        </el-form-item>

        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input v-model="formData.password" type="password" />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="formData.remember">记住我</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="login">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { USER_INFO } from '@/constants/KEY'
import { mapActions } from 'vuex'
export default {
  name: 'Login',
  data() {
    return {
      formData: {
        username: '',
        password: '',
        remember: false

      },
      rules: {
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }
        ]
      }
    }
  },
  mounted() {
    // 3.从本地取出用户记录的名字和密码
    const userData = localStorage.getItem(USER_INFO)
    // 如果有则设置，如果本地前面没有记住过则什么都不干
    if (userData) {
      const userInfo = JSON.parse(userData)
      this.formData.username = userInfo.username
      this.formData.password = userInfo.password
      this.formData.remember = true
    }
  },
  methods: {
    ...mapActions('user', ['loginActions']),
    login() {
      this.$refs.form.validate(async(valid) => {
        if (valid) {
          // TODO
          // alert('校验通过')
          // dispatch / actions 会在原地返回一个Promise 对象 （等待 acticons 函数内走完才有结果）
          await this.loginActions({
            username: this.formData.username,
            password: this.formData.password
          })
          // 1.判断是否勾选了’记住我‘
          if (this.formData.remember) {
          // 2.当前用户名和密码记录在本地
            localStorage.setItem(USER_INFO, JSON.stringify({
              username: this.formData.username,
              password: this.formData.password
            }))
          } else {
            localStorage.removeItem(USER_INFO)
          }
          // push（）往历史记录里添加新的路由地址 A -> B(回退到A)
          // replace（）替换当前理由地址 A 到B （直接替换掉 A ，不会产生历史记录，回到A）
          // 新开个标签页进行测试（历史记录是干净的）
          const { redirect } = this.$route.query
          this.$router.replace(redirect || '/')
        }
      })
    }
  }

}

</script>

<style scoped lang="scss">
  .login_body {
    display: flex;
  }
  .bg {
    width: 60vw;
    height: 100vh;
    background: url('~@/assets/login-bg.svg') no-repeat;
    background-position: right top;
    background-size: cover;
  }
  .box {
    margin: 200px 10% 0;
    flex: 1;
    .title {
      padding-bottom: 76px;
      font-size: 26px;
      font-weight: 500;
      color: #1e2023;
    }
    ::v-deep() {
      .ant-form-item {
        display: flex;
        margin-bottom: 62px;
        flex-direction: column;
      }
      .ant-form-item-label label {
        font-size: 16px;
        color: #8b929d;
      }
      .ant-input,
      .ant-input-password {
        border-radius: 8px;
      }
    }
  }
  .login_btn{
    width: 100%;
  }
</style>
